Note that nice +19 and nice +20 guarantee exclusion w.r.t. priority <= 0.
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.\" $NetBSD: getpriority.2,v 1.6 1999/03/22 19:45:04 garbled Exp $
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.\" $NetBSD: getpriority.2,v 1.7 1999/08/20 19:58:20 ross Exp $
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.\"
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.\" Copyright (c) 1980, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -80,7 +80,8 @@ A zero value of
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denotes the current process, process group, or user.
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.Fa prio
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is a value in the range -20 to 20. The default priority is 0;
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lower priorities cause more favorable scheduling.
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lower priorities cause more favorable scheduling. A value of 19 or 20
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will schedule a process only when nothing at priority \*(Le 0 is runnable.
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.Pp
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The
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.Fn getpriority
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